Interstate 40 (I-40) is an east-west transcontinental Interstate highway in the United States running from California to North Carolina. The stretch in the state of Oklahoma has a length of 331 miles and crosses the counties of Beckham, Washita, Custer, Caddo, Canadian, Oklahoma, Pottawatomie, Seminole, Okfuskee, Okmulgee, McIntosh, Muskogee, and Sequoyah. The highway begins near Texola at the Texas state line, and ends close to Roland at the Arkansas state line. It opened in 1957.
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